this post was submitted on 12 Apr 2024
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world.  About 1C of total warming.  Second chart:  about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability.  Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases.  About 0.5C of cooling with large error bars from SO2.

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[–] Bademantel@feddit.de 7 points 1 year ago

Spoiler: Not great

[–] jlow@beehaw.org 5 points 1 year ago (1 children)

That is actually better then I thought (Germany and UK) but I'm pretty sure we're still on our way to miss our targets by a mile even though I don't know what they are, exactly. Probably reduction not compared to 1990 but 2010 or 2020?

From 2010 to 2022 Germany's reduction was only from 10 to 8 t per capita:

https://ourworldindata.org/co2/country/germany

And it seems to have gone up from 2020 to 2022 😢

[–] Buelldozer@lemmy.today 1 points 1 year ago (1 children)

And it seems to have gone up from 2020 to 2022

Russian Natural Gas is gone and they closed their Nuclear Power Stations so back to coal they went!

[–] federalreverse@feddit.de 2 points 1 year ago* (last edited 1 year ago)

Not true. Coal use has actually declined again quickly, while renewables have supplanted the (meagre) former nuclear capacity. Germany also imports a bit more power from its European neighbors to avoid spinning up costly fossil plants. Most of the imports are low-CO2, i.e. Swedish/Austrian/Swiss hydro power, Danish wind power, and French nuclear.

[–] Womble@lemmy.world 1 points 1 year ago (1 children)

France would have been an interesting country to conpare to here, as their electricity was already largely decarbonised in 1990.

[–] Buelldozer@lemmy.today 2 points 1 year ago (1 children)
[–] Womble@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

Its not quite the same data, that's CO2 per person from energy and industry (excluding land use changes), the article was looking at CO2 equivalent of all GHGs. Still shows what I suspected, that France was lower overall but not going down as quickly as they are unable to get quick wins from decarbonising electricity.

Edit: actually scrap that I realised there was more data further down the page and it looks like when looking at total GHG emissions France is going down at about the same rate as Germany despite starting from a lower baseline. Viva la France! (though not as fast as the UK who have gone from per capital emissions equal to Germany in 1990 to being equal to France today)